
\begin{tikzpicture}[scale=1.2]
  \tkzDefPoints{2/3/A,0/0/B,5/0/C,3/2/D,1.5/1/E,1.25/0/F}
  \tkzFillPolygon[cyan!20](B,E,F)
  \tkzDrawPolygon(A,B,C)
  \tkzDrawSegments(B,D A,F)
  \tkzDrawSegment[dashed](D,F)
  \tkzMarkSegments[mark=|,color=teal](B,E D,E)
  \tkzDrawPoints(A,B,C,D,E,F)
  \tkzLabelPoints[above](A)
  \tkzLabelPoints[below](B,C,F)
  \tkzLabelPoints[above right](D)
  \tkzLabelPoints[above left](E)
\end{tikzpicture}
